Marble is a metamorphic rock that recrystallizes under the influence of heat, pressure, and aqueous solutions. The main component is calcium carbonate, and its content is about 50%-75%. Marble has a hardness of three on the Mohs hardness scale and it is easy to carve.
Marble is also a kind of rock ore that widely exists in nature. It is mostly used as machine-made sand and is used in building materials, construction, sculpture, landscaping, interior design, fashion, the chemical industry, and other industries.
What are the characteristics of marble aggregates?
Marble aggregates are small pieces of crushed or ground marble that is used as construction materials. Some of the characteristics of marble aggregates include:
1. Durability
Marble aggregates are known for their durability and resistance to weathering, making them ideal for use in construction projects.
2. Aesthetics
Marble aggregates have a unique and attractive appearance, with a range of colors and patterns that can enhance the visual appeal of building facades, landscaping, and decorative concrete.
3. Low porosity
Marble aggregates have low porosity, which means that they absorb very little moisture. This makes them ideal for use in applications where moisture resistance is important, such as in flooring or countertops.
4. High compressive strength
Marble aggregates have a high compressive strength, which means that they can withstand heavy loads without breaking or deforming. This makes them suitable for use in high-traffic areas, such as walkways, driveways, and parking lots.
5. Chemical resistance
Marble aggregates are resistant to many chemicals, which makes them suitable for use in applications where they may be exposed to chemicals or acids, such as in industrial flooring or laboratory countertops.
How to produce marble sand?
How is marble made into sand for use as building aggregates? What kind of crushing and sand-making equipment do I need?
The process of marble sand making is generally crushing, screening, sand making, sand washing, etc., which requires feeding equipment, conveying equipment, crushing equipment, sand making equipment, sand washing equipment, etc.
Marble crushing
The raw marble is evenly sent to a jaw crusher by the vibrating feeder for primary crushing and then enters the impact crusher for fine crushing. The finely crushed marble is sent to the vibrating screen for screening under the drive of the belt conveyor, and the materials that meet the requirements enter the next process.
Marble sand-making
After the marble is crushed, it is transformed the crushed marble into machine-made sand by using sand-making equipment. This can be done using a vertical shaft impact crusher, which uses high-speed rotating impellers to crush the marble powder into the sand. The sand is then screened to ensure that it has the proper particle size and shape.
Marble washing and drying
After the sand is made, it is washed to remove any impurities that may have been introduced during the sand-making process. The sand is then dried to remove any excess moisture, which could cause issues during transport or storage.
Marble packaging
Finally, the machine-made sand is packaged and prepared for distribution to customers. It can be used in a variety of applications, including construction, landscaping, and decorative purposes.
Each step is important to ensure that the final product is of high quality and suitable for use in a variety of applications. The machine-made sand made of marble has a uniform particle size and can be widely used in municipal construction such as roads, railways, and high-speed rails.
Which countries produce and export marble?
The following countries are among the top producers and exporters of marble in the world:
- Italy: Italy is the world’s largest producer and exporter of marble, accounting for more than 20% of global production.
- China: China is the second-largest producer and exporter of marble, with a rapidly growing domestic market and increasing exports to other countries.
- Turkey: Turkey is another major producer and exporter of marble, with a long history of marble quarrying and processing.
- Spain: Spain is known for its rich marble resources and has a long history of marble mining, dating back to ancient Roman times. Spain is a significant producer of marble, with a strong tradition of stone masonry and sculpture.
- India: India is also a major producer and exporter of marble, with a growing domestic market and increasing exports to other countries.
- Pakistan: Pakistan is the sixth-largest marble reserve country in the world. Its high-quality marble is very popular in the stone market.
Other notable marble producers and exporters include Greece, Iran, Egypt, Brazil, and Portugal. The demand for marble continues to grow globally, driven by increasing construction and infrastructure projects, as well as rising demand for decorative and luxury products.
Marble varieties are rich and varied, and marble in different places has its characteristics. They are the world’s stone raw material exporters, with rich stone reserves, many varieties, and high quality.